Species assembly method for rapidly improving vegetation coverage degree of extreme arid region

A technology of vegetation coverage and assembly method, which is applied in the field of species assembly to rapidly increase vegetation coverage in extreme arid desert areas, can solve problems such as low survival rate of poor soil plants, land desertification, and secondary salinization difficult to improve, and achieve Reduce soil desertification, fix soil salinity and fertilize, and ensure normal germination

Active Publication Date: 2018-05-08
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the problems of severe land desertification, secondary salinization difficult to improve, and low survival rate of plants in poor soil in arid desert areas, and provides a new method for quickly realizing large-scale vegetation coverage, reducing desertification, and reducing sandstorms in arid desert areas. method

Method used

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  • Species assembly method for rapidly improving vegetation coverage degree of extreme arid region
  • Species assembly method for rapidly improving vegetation coverage degree of extreme arid region

Examples

Experimental program
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Effect test

Embodiment 1

[0023] a. Soil preparation: Select desertified land with an average electrical conductivity of 8.01ms / cm and an average water content of 5.15g / L from the soil surface to the depth of 50cm in the Yingsu section of the lower reaches of the Tarim River. The depth is 20cm to plow and dry for 3 days, and then dig a 30cm×30cm soil pit with a plant row spacing of 50cm for subsequent use;

[0024]b. Plant species configuration mode: select local dominant plants through conventional soil seed bank germination tests and regional surviving plant species surveys and classify them into arbor, shrub and grass, and select four types of plants from them: developed root system, drought resistance, and salt-alkali tolerance The dominant tree is Populus euphratica, the deep-rooted, drought-resistant, salt-secreting shrubs Tamarix and Haloxylon, drought-tolerant and salt-resistant, perennial deep-rooted herbs camel thorn and apocynum, salt-alkali-resistant, wide habitat, easy to germinate, and eas...

Embodiment 2

[0029] a. Soil preparation: select sandy soil with an average conductivity of 1.13ms / cm and an average water content of 4.77% from the soil surface to a depth of 50cm, and plow the soil surface to a depth of 20cm from September to October , aired for 4 days, then dig a 30cm×30cm soil pit with a distance of 50cm between plants and rows, and set aside;

[0030] b. Plant species configuration mode: select local dominant plants through conventional soil seed bank germination tests and regional surviving plant species surveys and classify them into arbor, shrub and grass, and select four types of plants from them: developed root system, drought resistance, and salt-alkali tolerance The dominant tree is Populus euphratica, the deep-rooted, drought-resistant, salt-secreting shrubs Tamarix and Haloxylon, drought-tolerant and salt-resistant, perennial deep-rooted herbs camel thorn and apocynum, salt-alkali-resistant, wide habitat, easy to germinate, and easy to survive , Shallow-rooted...

Embodiment 3

[0035] a. Soil preparation: choose sandy soil with an average conductivity of 11.16ms / cm and an average water content of 12.89% from the soil surface to a depth of 50cm, and plow the soil surface to a depth of 20cm from September to October , dried in the sun for 5 days, and then dug a 30cm×30cm soil pit at a distance of 50cm between plants and rows, and set aside;

[0036] b. Plant species configuration mode: select local dominant plants through conventional soil seed bank germination tests and regional surviving plant species surveys and classify them into arbor, shrub and grass, and select four types of plants from them: developed root system, drought resistance, and salt-alkali tolerance The dominant tree is Populus euphratica, the deep-rooted, drought-resistant, salt-secreting shrubs Tamarix and Haloxylon, drought-tolerant and salt-resistant, perennial deep-rooted herbs camel thorn and apocynum, salt-alkali-resistant, wide habitat, easy to germinate, and easy to survive ,...

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Abstract

The invention relates to a species assembly method for rapidly improving the vegetation coverage degree of an extreme arid region. The method is implemented through soil preparation, plant species configuration mode selection, arbor and shrub planting mode selection, herb planting mode selection and irrigation management mode selection. According to the method, by selecting reasonable configuringthe planting modes and irrigation modes among arbors, shrubs and herb, an arbor, shrub and herb structure plant community is created on desertified land, wherein the average electrical conductivity from the soil surface layer to the soil layer with the depth of 50 cm is 1.13-11.16 ms/cm, and the average water content is 4.77-12.89%; the survival rate of the arbors and the shrubs is increased, andthe vegetation coverage degree is quickly increased to 60% or above; meanwhile, the aims of solidifying desertified soil, reducing the soil salt content and increasing the soil water content are achieved, and it is ensured that large-area vegetation coverage can be quickly achieved on the desertified land in the extreme arid region. The problems that land desertification is severe in an arid desert area, secondary salinization is difficult to improve, and the survival rate of plants on poor soil is low are solved.

Description

technical field [0001] The invention relates to a species assembly method for rapidly increasing vegetation coverage in an extremely arid desert area, in particular to a method for rapidly realizing large-scale vegetation coverage, reducing desertification, and reducing sandstorm and soil salinity in the desert area of ​​the lower reaches of the Tarim River. Background technique [0002] Extremely arid areas generally refer to areas with an average annual precipitation of less than 200 mm, mainly located in Northwest China, including Xinjiang, Hexi Corridor in Gansu, Qilian Mountains in Qinghai, Alxa Plateau in Inner Mongolia, etc., covering China's four major deserts and a large area of ​​Gobi. 235.2km 2 , accounting for 24.5% of the country's land area. The extremely arid area is located in the Eurasian continent, far away from the ocean, blocked by mountains, and the humid air flow from the ocean arrives. The climate is dry and the precipitation is scarce. Intense, wind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G22/00
CPCA01G17/005
Inventor 周洪华陈亚鹏郝兴明李卫红陈亚宁
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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